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wip
This commit is contained in:
Nicolas Mattia
parent
1dd094156b
commit
b69df92ce1
141
nix/sources.nix
141
nix/sources.nix
@ -1,25 +1,11 @@
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# This file has been generated by Niv.
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# A record, from name to path, of the third-party packages
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with rec
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{
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pkgs =
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if hasNixpkgsPath
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then
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if hasThisAsNixpkgsPath
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then import (builtins_fetchTarball { inherit (sources_nixpkgs) url sha256; }) {}
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else import <nixpkgs> {}
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else
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import (builtins_fetchTarball { inherit (sources_nixpkgs) url sha256; }) {};
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sources_nixpkgs =
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if builtins.hasAttr "nixpkgs" sources
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then sources.nixpkgs
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else abort
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''
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Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
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add a package called "nixpkgs" to your sources.json.
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'';
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let
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readJSON = fp: builtins.fromJSON (builtins.readFile fp);
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hasNixpkgsPath = (builtins.tryEval <nixpkgs>).success;
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hasThisAsNixpkgsPath =
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(builtins.tryEval <nixpkgs>).success && <nixpkgs> == ./.;
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# fetchTarball version that is compatible between all the versions of Nix
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builtins_fetchTarball =
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@ -43,51 +29,84 @@ with rec
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else
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fetchurl attrs;
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# A wrapper around pkgs.fetchzip that has inspectable arguments,
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# annoyingly this means we have to specify them
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fetchzip = { url, sha256 }@attrs: pkgs.fetchzip attrs;
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mk =
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{ sourcesJson ? ./sources.json,
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useBuiltinFetchers ? true,
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pkgs ?
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let
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sources = readJSON sourcesJson;
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sources_nixpkgs =
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if builtins.hasAttr "nixpkgs" sources
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then sources.nixpkgs
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else abort
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''
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nixpkgs is needed, but I cannot find one to use.
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Please either
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* specify <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
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* add a package called "nixpkgs" to your sources.json or
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* use `sources.__configure { pkgs = ... }` or
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* use `sources.__configure { useBuiltinFetchers = true; }`
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'';
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in
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if hasNixpkgsPath
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then
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if hasThisAsNixpkgsPath
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then import (builtins_fetchTarball { inherit (sources_nixpkgs) url sha256; }) {}
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else import <nixpkgs> {}
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else
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import (builtins_fetchTarball { inherit (sources_nixpkgs) url sha256; }) {}
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}:
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# A wrapper around pkgs.fetchurl that has inspectable arguments,
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# annoyingly this means we have to specify them
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fetchurl = { url, sha256 }@attrs: pkgs.fetchurl attrs;
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let
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sources = readJSON sourcesJson;
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hasNixpkgsPath = (builtins.tryEval <nixpkgs>).success;
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hasThisAsNixpkgsPath =
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(builtins.tryEval <nixpkgs>).success && <nixpkgs> == ./.;
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# A wrapper around pkgs.fetchzip that has inspectable arguments,
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# annoyingly this means we have to specify them
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fetchzip = { url, sha256 }@attrs: pkgs.fetchzip attrs;
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sources = builtins.fromJSON (builtins.readFile ./sources.json);
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# A wrapper around pkgs.fetchurl that has inspectable arguments,
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# annoyingly this means we have to specify them
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fetchurl = { url, sha256 }@attrs: pkgs.fetchurl attrs;
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mapAttrs = builtins.mapAttrs or
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(f: set: with builtins;
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listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set)));
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mapAttrs = builtins.mapAttrs or
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(f: set: with builtins;
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listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set)));
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# borrowed from nixpkgs
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functionArgs = f: f.__functionArgs or (builtins.functionArgs f);
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callFunctionWith = autoArgs: f: args:
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let auto = builtins.intersectAttrs (functionArgs f) autoArgs;
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in f (auto // args);
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# borrowed from nixpkgs
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# TODO: get rid of this
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functionArgs = f: f.__functionArgs or (builtins.functionArgs f);
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callFunctionWith = autoArgs: f: args:
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let auto = builtins.intersectAttrs (functionArgs f) autoArgs;
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in f (auto // args);
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getFetcher = spec:
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let fetcherName =
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if builtins.hasAttr "type" spec
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then builtins.getAttr "type" spec
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else "builtin-tarball";
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in builtins.getAttr fetcherName {
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"tarball" = fetchzip;
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"builtin-tarball" = builtins_fetchTarball;
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"file" = fetchurl;
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"builtin-url" = builtins_fetchurl;
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};
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};
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# NOTE: spec must _not_ have an "outPath" attribute
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mapAttrs (_: spec:
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if builtins.hasAttr "outPath" spec
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then abort
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"The values in sources.json should not have an 'outPath' attribute"
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else
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if builtins.hasAttr "url" spec && builtins.hasAttr "sha256" spec
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then
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spec //
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{ outPath = callFunctionWith spec (getFetcher spec) { }; }
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else spec
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) sources
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getFetcher = spec:
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# TODO:
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# here use
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# if spec.type == ... then ... else if spec.type == ... etc and
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# finally abort with error saying "please use __configure { fetcher =
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# ... }". If `! spec ? type` then abort.
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let fetcherName = spec.type or "builtin-tarball";
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in builtins.getAttr fetcherName {
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"tarball" = if useBuiltinFetchers then builtins_fetchTarball else fetchzip;
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# TODO: message about deprecation
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"builtin-tarball" = builtins_fetchTarball;
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"file" = if useBuiltinFetchers then builtins_fetchurl else fetchurl;
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"builtin-url" = builtins_fetchurl;
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};
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in
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# NOTE: spec must _not_ have an "outPath" attribute
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(mapAttrs (_: spec:
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if builtins.hasAttr "outPath" spec
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then abort
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"The values in sources.json should not have an 'outPath' attribute"
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else
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if builtins.hasAttr "url" spec && builtins.hasAttr "sha256" spec
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then
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spec //
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{ outPath = callFunctionWith spec (getFetcher spec) { }; }
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else spec
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) sources )//
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{ __configure = mk ; };
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in
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mk {}
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@ -46,6 +46,7 @@ cli = join $ Opts.execParser opts
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opts = Opts.info (parseCommand <**> Opts.helper) $ mconcat desc
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desc =
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[ Opts.fullDesc
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-- , Opts.progDesc "FOOO"
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, Opts.headerDoc $ Just $
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"niv - dependency manager for Nix projects" Opts.<$$>
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"" Opts.<$$>
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@ -59,7 +60,8 @@ parseCommand = Opts.subparser (
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Opts.command "show" parseCmdShow <>
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Opts.command "update" parseCmdUpdate <>
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Opts.command "modify" parseCmdModify <>
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Opts.command "drop" parseCmdDrop )
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Opts.command "drop" parseCmdDrop ) <|>
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(pure () <$ Opts.abortOption Opts.ShowHelpText (Opts.helpDoc (Just "foo")))
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newtype Sources = Sources
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{ unSources :: HMS.HashMap PackageName PackageSpec }
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